Dera Prof Ripley, You wrote : What did you intend there? It is not a test of no difference, but a test that each element of the difference is not "0", and furthermore if() expects a test of length one, not the length of nfichiers. I suspect you intended to test length(nfichiers) > 0.
And of course, you were right. With the condition length(nfichiers) > 0, there is no more warning. And I tested manually length(nfichiers)>0 for different cases and it gave the result I expected. But still I have a problem with the save and the retrieve of tfichiers. I keep on looking at help file and testing manually alternative scripts ... Hoping to read you again, Ptit Bleu. -- View this message in context: http://www.nabble.com/Problem-with-save-or-and-if-%28I-think-but-maybe-not-...%29-tf4333945.html#a12344227 Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
